The romantic image of Scotland, the tartans, the rugged Highland clans, the misty drama, is largely the invention of one 19th-century author so influential that Mark Twain blamed his books for the American Civil War. When you picture Scotland today, you are wandering inside his imagination.

This episode explores how Sir Walter Scott single-handedly invented the historical novel, rewrote a nation's identity, and built a publishing empire, only to lose everything and write himself to death repaying a crushing debt. We follow him from a polio-stricken childhood in the Scottish Borders to his staggering literary fame and tragic final marathon.

• How contracting polio sent him to the Borders, where Aunt Jenny steeped him in the oral ballads and legends that became his life's work
• His pivot from blockbuster poetry to prose after  ...